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Simpler markup for covers that works in HTML 5 rendering mode

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This commit is contained in:
Kovid Goyal 2016-04-29 14:13:34 +05:30
parent fb25c0aaae
commit b4f793507a
3 changed files with 14 additions and 13 deletions
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2
src/calibre/ebooks/oeb/polish/cover.py
View File

@ -294,7 +294,7 @@ def create_epub_cover(container, cover_path, existing_image, options=None):
templ = CoverManager.NONSVG_TEMPLATE.replace('__style__', style)
else:
if callable(cover_path):
templ = CoverManager.SVG_TEMPLATE
templ = (options or {}).get('template', CoverManager.SVG_TEMPLATE)
else:
width, height = 600, 800
try:

14
src/calibre/srv/render_book.py
View File

@ -16,6 +16,7 @@ from urllib import quote
from cssutils import replaceUrls
from cssutils.css import CSSRule
from calibre import prepare_string_for_xml
from calibre.ebooks import parse_css_length
from calibre.ebooks.oeb.base import (
OEB_DOCS, OEB_STYLES, rewrite_links, XPath, urlunquote, XLINK, XHTML_NS, OPF, XHTML, EPUB_NS)
@ -134,12 +135,18 @@ class Container(ContainerBase):
f.write(json.dumps(self.book_render_data, ensure_ascii=False).encode('utf-8'))
def create_cover_page(self, input_fmt):
templ = '''
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head><style>
html, body, img { height: 100%%; display: block; margin: 0; padding: 0; border-width: 0; }
img { width: auto; margin-left:auto; margin-right: auto; }
</style></head><body><img src="%s"/></body></html>
'''
if input_fmt == 'epub':
def cover_path(action, data):
if action == 'write_image':
data.write(BLANK_JPEG)
return set_epub_cover(self, cover_path, (lambda *a: None))
from calibre.ebooks.oeb.transforms.cover import CoverManager
return set_epub_cover(self, cover_path, (lambda *a: None), options={'template':templ})
raster_cover_name = find_cover_image(self, strict=True)
if raster_cover_name is None:
item = self.generate_item(name='cover.jpeg', id_prefix='cover')
@ -148,8 +155,7 @@ class Container(ContainerBase):
dest.write(BLANK_JPEG)
item = self.generate_item(name='titlepage.html', id_prefix='titlepage')
titlepage_name = self.href_to_name(item.get('href'), self.opf_name)
templ = CoverManager.SVG_TEMPLATE
raw = templ % self.name_to_href(raster_cover_name, titlepage_name)
raw = templ % prepare_string_for_xml(self.name_to_href(raster_cover_name, titlepage_name), True)
with self.open(titlepage_name, 'wb') as f:
f.write(raw.encode('utf-8'))
spine = self.opf_xpath('//opf:spine')[0]

11
src/pyj/read_book/resources.pyj
View File

@ -39,14 +39,9 @@ def load_resources(db, book, root_name, previous_resources, proceed):
db.get_file(book, name, got_one)
def got_one(data, name, mimetype):
if name is book.manifest.title_page_name:
w = book.manifest.cover_width or 600
h = book.manifest.cover_height or 800
ar = 'xMidYMid meet' # or 'none'
data = data.replace('__ar__', ar)
data = data.replace('__viewbox__', '0 0 ' + w + ' ' + h)
data = data.replace('__width__', w + '')
data = data.replace('__height__', h + '')
if False and name is book.manifest.title_page_name:
# Enable to have cover image not preserve aspect ratio
data = data.replace('width: auto', 'width: 100%')
ans[name] = v'[data, mimetype]'
if type(data) is 'string':
find_virtualized_resources(data)